Abstract: Described is a system and method for remote monitoring and diagnostics of heating, ventilation, and air conditioning (HVAC) equipment utilizing components to remotely monitor performance metrics for HVAC systems, report data to a centralized database for analysis and formulate a remediation plan. The system and method use monitoring devices which monitor air quality data and other data from the HVAC system. IoT and cloud-based solutions transmit data from monitoring devices to a centralized database for analysis/storage. An application program uses algorithms to analyze data to provide actionable alerts to the user if maintenance is needed. The algorithm is a control sequence for use in HVAC settings and uses logic based on the operating conditions reported by monitoring devices. If a need for system investigation or equipment maintenance is identified, the system generates an alert to the HVAC maintenance team for validation before sending the alert to the customer.

Abstract: Entertainment apparatus comprising a book and a mechanical indicator; wherein the book comprises a plurality of bound pages, a first mounting means having a reference means provided in a first predetermined relative position thereto, and a second mounting means having a first magnet provided in a second predetermined relative position thereto, and the mechanical indicator comprises a rotatable member attached to an indicating member and which is selectively rotatable with respect to the indicating member, and a second magnet, and wherein the reference means restricts relative rotation of the rotatable member when the mechanical indicator is mounted on the first mounting member and the indicating member is rotated with respect to the rotatable member, the first and second magnets can interact to rotate the mechanical indicator when the mechanical indicator is mounted on the second mounting means, and the rotatable member does not rotate with respect to the indicating member when the mechanical indicator is rot